Home / 12,108.18-18,162.09-3,342.90

Finding the Fourth Proportional to 12,108.18, 18,162.09 and 3,342.90

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Solution

The fourth proportional to 12,108.18, 18,162.09 and 3,342.90 is: 5,014.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,108.18 : 18,162.09 = 3,342.90 : x
  2. Step 2: Convert to fraction form
    12,108.18/18,162.09 = 3,342.90/x
  3. Step 3: Cross multiply
    12,108.18x = 18,162.09 × 3,342.90
  4. Step 4: Simplify right side
    12,108.18x = 60,714,050.66
  5. Step 5: Solve for x
    x = 60,714,050.66/12,108.18
  6. Step 6: Final answer
    x = 5,014.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.